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Sep 24, 2026

Planning a Garden Room in London: What Affects the Cost?

Planning a Garden Room in London: What Affects the Cost?

A garden room can give you a separate place to work, exercise or relax without rearranging the main house. The best starting point is deciding how you intend to use it.

A home office, garden gym and leisure room each deserve a specification that suits their purpose.

Look beyond the size

When comparing garden room quotations, ask what is included beyond the walls and roof. Discuss foundations, insulation, doors, windows, electrical installation, flooring and decoration.

Access to the garden, site clearance and the surrounding landscaping should also form part of the conversation. For a bathroom or kitchenette, include plumbing, drainage and hot-water requirements from the beginning rather than adding them after the design is agreed.

For a gym, explain which equipment you plan to use so its requirements can be considered.

Check the requirements before building

Some garden buildings in England fall within permitted development, but conditions and restrictions apply. Planning permission and Building Regulations approval are separate matters, so check both for your proposed building and intended use.

KTCS Construction has completed garden rooms and dedicated garden gym projects across Harrow, bringing together groundworks, construction, roofing, insulation and finishing.

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Tell us how you would like to use your garden space. Send your postcode, approximate dimensions and photographs for a free quotation.

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